Am'/uiy1;"i89hiarm'}  Pharmaceutical  Uses  of  Extract  of  Malt.  343 
Some  of  the  resinous  substances  most  frequently  administered  in 
form  of  emulsion  yield  with  extract  of  malt  mixtures  equal  in  all  cases 
to  the  acacia  emulsions,  and,  in  most  instances,  more  agreeable  to 
the  taste,  and  of  more  attractive  appearance.  The  unsightly  appear- 
ance of  both  the  tincture  and  resin  of  guaiac  when  made  into  an 
emulsion  with  acacia  is  well  known  to  every  pharmacist,  and  as  it  is 
a  remedy  which  is  frequently  prescribed,  it  would  seem  to  be  worth 
making  an  effort  to  improve  upon  the  old  emulsion.  With  the  Tincture 
of  Guaiac  a  good  mixture  can  be  made  by  stirring  together,  in  a 
graduate,  equal  measures  of  extract  of  malt  and  afterwards  tincture 
of  guaiac,  gradually  added  ;  care  must  be  taken  not  to  allow  the 
tincture  to  come  in  direct  contact  with  the  sides  of  the  graduate 
and  it  is  well  to  take  the  precaution  to  first  wet  the  sides  with  the 
extract  and  the  syrup  before  the  addition  of  the  tincture.  The  mix- 
ture obtained  in  this  way,  while  not  as  bright  in  appearance  as 
either  the  malt  extract  or  the  syrup,  does  not  assume  the  bluish 
color  of  the  gum  emulsion.  After  standing  for  a  day  it  separates 
into  two  layers,  the  lower  transparent  and  bright,  the  upper  one  hav- 
ing a  slightly  curdled  appearance,  but  a  slight  shake  of  the  bottle 
suffices  to  cause  the  layers  to  mix  again.  That  the  guaiac  is  con- 
tained in  both  layers  I  have  determined  by  setting  aside  a  portion 
in  a  narrow  tube  until  the  two  layers  had  formed  and  examining 
them  both  ;  the  lower  one  becomes  opaque  by  the  addition  of  water, 
but  glass  tubes  or  graduates  containing  it  can  be  made  perfectly 
clear  and  bright  by  simply  jinsing  with  cold  water,  thus  showing 
that  the  resin  has  been  taken  up  or  emulsionized  by  the  extract  of 
malt. 
With  the  Resin  of  Guaiac  the  method  must  be  slightly  different,  it 
should  be  first  rubbed  thoroughly  in  a  mortar  with  the  extract  of 
malt  until  a  smooth  paste  is  obtained,  after  which  sufficient  of  the 
syrup  of  wild  cherry  is  added  to  make  the  mixture  fluid  enough. 
With  Tincture  of  Asafetida  a  mixture  is  obtained  in  the  same 
manner  as  with  tincture  of  guaiac,  but  to  prepare  a  mixture  from  the 
gum  resin,  it  is  best  to  rub  it  first  in  a  mortar  with  a  small  quantity 
of  hot  water  to  form  a  paste,  then  add  the  malt  and  syrup  alter- 
nately in  small  portions  ;  it  can  easily  be  made  to  contain  8  per  cent. 
— double  the  strength  of  the  U.  S.  P.  Mistura  Asafcetidse.  An  advan- 
tage of  this  over  the  official  mixture  is,  that  it  does  not  have  the 
exceedingly  disagreeable  smell  of  the  latter  and  the  taste  is  less 
